Galaxy A21s vs Galaxy A51
Shop Samsung Galaxy
Galaxy A21s
Starting at
£60.24£219.00 new
Galaxy A51
Starting at
£96.95£350.00 newWhat's the difference between the Galaxy A21s and Galaxy A51?
Galaxy A21s vs A51 comes down to the chipset, RAM and battery. Refurbished, the Galaxy A21s starts at £60.24, £36.71 less than the Galaxy A51. The Galaxy A21s is the newer model, released in 2020.
Refurbished from
Chipset
RAM
Battery
Screen type
Front camera
- Chipset: Exynos 850 on the Galaxy A21s, Exynos 9611 on the Galaxy A51.
- The Galaxy A51 has more RAM: 4 GB vs 3 GB.
- The Galaxy A21s has a bigger battery: 5000 mAh vs 4000 mAh.
Galaxy A21s vs Galaxy A51 specs
The Galaxy A21s and Galaxy A51 both offer 4G connectivity and Android operating systems but differ in several key areas that shape who they suit best. The Galaxy A21s has a larger 5000 mAh battery for longer usage and comes with 3 GB RAM and 32GB or 64GB storage options, making it fit for everyday use where battery life is a priority. The Galaxy A51 offers more memory with 4 GB RAM and larger storage choices up to 128GB, plus a sharper 1080 x 2400 Super AMOLED screen and a higher resolution front camera, which benefits users who want more vibrant display and detailed selfies. The A51's slimmer, lighter design and dual SIM support may appeal to those valuing portability and flexibility. Both devices are unlocked and support microSDXC cards for memory expansion, but each suits different user needs based on these differences.
Galaxy A21s vs Galaxy A51 price
Colour
Galaxy A21s vs Galaxy A51 battery life and software updates
Battery capacity and software updates are key for device longevity. Battery size varies, which affects how long you can use each phone before recharging.
Battery Capacity
The Galaxy A21s has a 5000 mAh battery, offering longer usage between charges. This suits users who need extended battery life for daily tasks or being away from power sources. The Galaxy A51's 4000 mAh battery still supports a full day of use but may require more frequent charging for heavier users.
Battery
Fast charging
Foldable
Software updates
Year of release
Galaxy A21s vs Galaxy A51 performance
Performance depends on chipset, RAM, and storage. The Galaxy A21s and Galaxy A51 differ in these areas, affecting speed and multitasking abilities as well as how much data and apps you can keep on your phone.
Chipset and RAM
The Galaxy A21s uses the Exynos 850 chipset paired with 3 GB of RAM, suitable for everyday tasks and light multitasking. The Galaxy A51 has the Exynos 9611 and 4 GB RAM, which supports smoother multitasking and better handling of demanding apps or games.
Storage Options
The Galaxy A21s comes with 32GB or 64GB storage, ideal for users with moderate storage needs. The Galaxy A51 offers larger options at 64GB and 128GB, fitting those who store more apps, photos, or media. Both phones allow microSDXC card expansion for additional space.
Chipset
RAM
Galaxy A21s vs Galaxy A51 screen
Screen quality influences viewing experience. Both phones have a 6.5 inch display, but resolution and screen type differ, affecting clarity and colour vibrancy.
Resolution and Display Type
The Galaxy A21s has a 720 x 1600 PLS LCD screen, which provides a decent viewing area but with lower resolution. The Galaxy A51 features a sharper 1080 x 2400 Super AMOLED screen, delivering brighter colours and deeper contrasts. This makes the A51 better suited for watching videos or viewing photos in detail.
Refresh rate
Resolution
Screen size
Screen type
Galaxy A21s vs Galaxy A51 camera
Camera quality is important for photos and video calls. Both phones share the same main camera resolution but differ in front camera detail.
Front Camera Megapixels
The Galaxy A21s has a 13 megapixel front camera, good for general selfies and video calls. The Galaxy A51's 32 megapixel front camera captures more detail, which benefits users who prioritise higher quality selfies or video chat clarity.
Main Camera
Both phones have a 48 megapixel main camera, providing similar photo resolution for everyday photography.
Front camera
Main camera
Galaxy A21s vs Galaxy A51 size and design
Other features include physical dimensions, SIM card options, and weight, which affect how the phones feel in your hand and your flexibility in using mobile networks.
Size and Weight
The Galaxy A21s measures 163.7 mm in height, 75.3 mm in width, and 8.9 mm in depth, weighing 192 g. The Galaxy A51 is slightly smaller at 158.5 mm height, 73.6 mm width, and 7.9 mm depth, with a lighter weight of 172 g. Users preferring a lighter, more compact phone may find the A51 more comfortable.
SIM Card Configuration
The Galaxy A21s supports a single physical SIM card, suitable for users with one mobile number. The Galaxy A51 supports dual physical SIM cards, which is useful if you want to use two numbers or networks on one device.
Carrier and Network
Both phones are unlocked and support 4G networks, offering flexibility to use them with different carriers.
Expandable Storage
Both phones have microSDXC card slots, allowing you to expand storage beyond the internal capacity.
Carrier compatibility
Depth
Height
Mobile network
Release date
SD card slot
SIM card
Weight
Width
Galaxy A21s or Galaxy A51: which should you buy?
Buy the Galaxy A21s if
- you want to spend less: it starts at £60.24, £36.71 less than the Galaxy A51
- you want a bigger battery (5000 mAh vs 4000 mAh)
Buy the Galaxy A51 if
- you want more RAM (4 GB vs 3 GB)
- you want an OLED screen
- you want a higher-resolution front camera (32 megapixels vs 13 megapixels)
What our customers say
Customers of the Galaxy A21s often praise the phone's condition, describing it as looking like new and reliable for everyday use. Many appreciate the good battery life, with several noting satisfaction with the phone's quality and performance after initial setup. Some mention that it works well for family members or as a secondary device, highlighting its suitability for basic smartphone needs. A few customers mention it works well once running.
Reviews for the Galaxy A51 highlight its sharp screen and good performance, with customers enjoying the larger storage options and better front camera for selfies. Some users mention the phone looks nearly new even when described as fair condition. Battery life receives mixed comments, with some finding it sufficient for a day of use. The phone's lighter weight and dual SIM support are appreciated by those who value portability and network flexibility.
Overall, the Galaxy A21s suits those looking for a dependable phone with longer battery life and essential features, while the Galaxy A51 is well suited to users who want a sharper display, more memory, and dual SIM support.
Galaxy A21s vs Galaxy A51 FAQs
Galaxy A21s vs A51 comes down to the chipset, RAM and battery. Chipset: Exynos 850 on the Galaxy A21s, Exynos 9611 on the Galaxy A51. The Galaxy A51 has more RAM: 4 GB vs 3 GB.
The Galaxy A21s is cheaper refurbished, from £60.24 compared with £96.95 for the Galaxy A51.
The Galaxy A21s has a bigger battery: 5000 mAh vs 4000 mAh.
Both have the same main camera: 48 megapixels.
The Galaxy A21s no longer gets updates. The Galaxy A51 no longer gets updates.
The Galaxy A21s adds a bigger battery (5000 mAh vs 4000 mAh). Refurbished, it costs £36.71 less (from £60.24 vs £96.95).
Refurbished, the Galaxy A21s comes in 32GB and 64GB, and the Galaxy A51 in 64GB and 128GB.
